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Two rods of different materials having d...

Two rods of different materials having differnet lengths and same cross sectional areas are joined end to end in a straight line. The free ends of this compound rod are maintained at different temperatures The temperature gradient in each rod will be .

A

same

B

zero

C

directly proportional to thermal conductivity of rod

D

inversely proportional to thermal conductivity of the rod .

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The correct Answer is:
D
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NARAYNA-TRANSMISSION OF HEAT-C .U .Q
  1. Why metals are good conductors of heat ?

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  2. In steady state .

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  3. Two rods of different materials having differnet lengths and same cros...

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  4. A piec of paper wrapped tightly on a wooden rod is found to get charge...

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  5. When heat flows through a wire of uniform cross section under steady s...

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  6. Temperature is analogous to

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  7. On heating one end of a rod the temperature of the whole rod will be u...

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  8. For an ideal conductor thermal resistance is .

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  9. A metal rod of area of cross section A has length L and coefficient of...

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  10. Thermmal conductivity of a metal rod depends on .

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  11. Coefficient of thermal conductivity .

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  12. If the end of metal rod is heated then the rate of flow the heat does...

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  13. In the following solids thermal conductivity is maximum for .

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  14. For a perfect insulator coefficient of thermal conductivity is .

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  15. Why is it hotter at the same distance over the top of a fire than in f...

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  16. The process in which rate of transfer of heat maximum is .

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  17. By which of the following methods could a cup of hot tea loss heat whe...

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  18. The thermal radiations are similar to .

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  19. The temperature at which a black body ceases to radiate energy is .

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  20. The intensity of energy radiated by a hot body at distance r from it v...

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